This sounds like something that has nothing to do with GPS.
You might take a look at the APCO Project 25 protocols. It's a digital
radio mode for public safety communications.
As some of the metadata fields on the transmissions are unencrypted
and uniquely identify a station, it's been theorized that it'd be
possible to perform doppler and RF analyses in conjunction with
analyzing the packets to track stations.
Maybe try getting a GNUradio implementation going to start playing?
Cheers,
jof
On Sun, Mar 10, 2013 at 4:57 PM, maestro <maestro415 at gmail.com> wrote:
> * anyone with gps hacking knowledge know if this is possible and if so
> want to do it?...
>> * disclaimer: i saw it on a idiotbox program the other night...
>> * does seem doable though...
>> step 1. rig a gps unit/system that uses police frequencies for coordinates
>> step 2. use coordinates to show where they are in a given area at any given time
>>> message ends
> _______________________________________________________________________
>> --
>>> *~the quieter you become, the more you are able to hear...*
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